TPS61023

@@ -0,0 +1,49 @@+# TPS61023++**Texas Instruments** · Boost switching regulator · SOT-563++Synchronous boost (step-up) converter in a tiny SOT-563 package, built for single-cell battery and supercap rails. It starts from 0.5 V (1.8 V minimum to start) and boosts an adjustable 2.2 to 5.5 V output set by an external FB divider, with a 3.7 A valley switch-current limit. True input-to-output disconnect, 5.7 V output OVP, short-circuit and thermal protection round it out. The default way to make a stable 3.3 V or 5 V rail from a drooping battery.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | FB | input | Voltage feedback pin for the adjustable output voltage. External R1/R2 divider from VOUT sets VOUT via the internal reference (V_REF = 595 mV typical in PWM mode). Very low leakage (~4 nA typical at 25 °C). |+| 2 | EN | input | Enable logic input. Logic high enables the device; logic low forces shutdown mode (~0.1 µA). V_EN_H = 1.2 V (max), V_EN_L = 0.35–0.45 V. Absolute max -0.3 V to 7 V. |+| 3 | VIN | power_in | IC power supply input. Recommended operating range 0.5 V to 5.5 V (1.8 V minimum required for start-up). Decouple locally with a ceramic capacitor (1.0 µF min, 4.7 µF typical). |+| 4 | GND | power_in | Ground pin of the IC. Return for input and output capacitors; connect directly to the system ground plane with a low-impedance path. |+| 5 | SW | power_out | Switch node of the boost converter. Connected to the drain of the internal low-side power MOSFET (47 mΩ) and the source of the internal high-side power MOSFET (68 mΩ). External inductor (0.37–2.9 µH; 1.0 µH typical) ties SW to VIN. Absolute max -0.3 V to 7 V (transient spikes to 9 V for 1 ns allowed). |+| 6 | VOUT | power_out | Boost converter output. Adjustable 2.2 V to 5.5 V set by external FB divider. Also supplies internal bias during light-load / super-cap backup operation (I_Q from VOUT ~20 µA typical). 5.7-V OVP; connect output capacitor (4 µF to 1000 µF effective, 10 µF typical). |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Synchronous boost (step-up) converter |+| Start-up voltage | 0.5 V (1.8 V min to start) |+| Input voltage | 0.5-5.5 V |+| Output voltage | 2.2-5.5 V adjustable (FB divider) |+| Switch current limit | 3.7 A (valley) |+| Protection | True I/O disconnect, 5.7 V OVP, short-circuit, thermal |+| Package | SOT-563 |+| Body (L×W×H) | 1.6 × 1.6 × 0.6 mm |++## Ordering variants++- `TPS61023DRLR (SOT-563, tape & reel)`++## CAD (KiCad official)++- Symbol: `TPS61023 (Adom-authored grouped symbol via adom-symbol; not in KiCad libs)`+- Footprint: `Package_TO_SOT_SMD:SOT-563`+- 3D model: SOT-563 (KiCad packages3D)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/tps61023.pdf) (28 pp, sha256 `e3558c95c8420812`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/tps61023-datasheet.pdf)

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